<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Array.from方法</title>
</head>
<body>
	<script type="text/javascript">
		// var arrayLike = {
		// 	"0": "张三",
		// 	"1": "李四",
		// 	"2": "王五",
		// 	"length": 3
		// }

		// var ary = Array.from(arrayLike);
		// console.log(ary)
		
		var arrayLike = {
			"0": "1",
			"1": "2",
			"length": 2
		}

		var ary = Array.from(arrayLike, item => item * 2)
		console.log(ary)
	</script>
</body>
</html>